Update Desktop Wallet (JS) tutorial dependencies, copy edits

_code-samples/build-a-desktop-wallet/js/1-ledger-index/index.js

@@ -1,40 +1,37 @@
 const { app, BrowserWindow } = require('electron')
 
 const path = require('path')
-const xrpl = require("xrpl")
+// Ledger index code additions - start
+const xrpl = require('xrpl')
 
-const TESTNET_URL = "wss://s.altnet.rippletest.net:51233"
+const TESTNET_URL = 'wss://s.altnet.rippletest.net:51233'
 
 /**
- * This function creates a WebService client, which connects to the XRPL and fetches the latest ledger index.
+ * Create a WebSocket client, connect to the XRPL, and fetch the latest ledger index.
  *
  * @returns {Promise<number>}
  */
 const getValidatedLedgerIndex = async () => {
     const client = new xrpl.Client(TESTNET_URL)
-
     await client.connect()
-
-    // Reference: https://xrpl.org/ledger.html#ledger
+    // Reference: https://xrpl.org/docs/references/http-websocket-apis/public-api-methods/ledger-methods/ledger
     const ledgerRequest = {
         "command": "ledger",
         "ledger_index": "validated"
     }
-
     const ledgerResponse = await client.request(ledgerRequest)
-
     await client.disconnect()
-
     return ledgerResponse.result.ledger_index
 }
+// Ledger index code additions - end
 
 /**
- * This is our main function, it creates our application window, preloads the code we will need to communicate
- * between the renderer Process and the main Process, loads a layout and performs the main logic
+ * Main function: create application window, preload the code to communicate
+ * between the renderer Process and the main Process, load a layout,
+ * and perform the main logic
  */
 const createWindow = () => {
-
-    // Creates the application window
+    // Create the application window
     const appWindow = new BrowserWindow({
         width: 1024,
         height: 768,
@@ -43,9 +40,8 @@ const createWindow = () => {
         },
     })
 
-    // Loads a layout
+    // Load a layout
     appWindow.loadFile(path.join(__dirname, 'view', 'template.html'))
-
     return appWindow
 }